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US 4,912,761 AGranted
Security facsimile systems
AssigneesJerry R. Iggulden, Donald A. Streck
InventorsJeanette C. Tan, Jerry R. Iggulden, Donald A. Streck
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AssigneesJerry R. Iggulden, Donald A. Streck
InventorsJeanette C. Tan, Jerry R. Iggulden, Donald A. Streck
Estimating the term…
A security method and apparatus for use in providing an "invisible envelope" for facsimile transmission thereby avoiding the casual reading of documents by persons interposed between the receiver of the transmission and the ultimate designated recipient thereof. Each page of the document is pattern divided into two portions which are individually unreadable in an easy and straightforward manner. The two portions are sent in sequence (i.e. at different times) and then the original document is reconsitituted at the receiving end by the designated recipient employing a transparency overlay process with the two portions. The patterning at the transmitting end may be accomplished by an optical filtering process or may be computer generated as by modifying word processing software or by a separate program manipulating a pre-input document to produce the two portions for printing and transmission. The HideaFAX.TM. process of this invention is applicable to conventional FAX machines without modification. It can also be built into a conventional FAX machine and can be easily added to the software of PC-fax or KeyFAX.TM. systems for inclusion therein.
The method of creating and sending a document by facsimile in a manner which prevents unauthorized casual reading of the document at a receiving location comprising the steps of:
The method of creating and sending a document by facsimile in a manner which prevents unauthorized casual reading of the document at a receiving location comprising the steps of:
The method 8 wherein said steps of optically filtering the hard copy of the document through a portion mask defining the areas of the document to be included each comprises the steps of:
The method of creating and sending a document by facsimile in a manner which prevents unauthorized casual reading of the document at a receiving location comprising the steps of:
The method of creating and sending a document by facsimile in a manner which prevents unauthorized casual reading of the document at a receiving location comprising the steps of:
A system for sending a document by facsimile in a manner which prevents unauthorized casual reading of the document at a receiving site comprising:
In a system for sending a document by facsimile, the improvement for sending documents in a manner which prevents unauthorized casual reading of the document at a receiving site comprising:
Dependencies are inferred from the claim text.